/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Returns the index of an element given its key
The index of the element or INDEX_NONE
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=URigHierarchy, Meta=(DisplayName="Get Index", ScriptName="GetIndex")) int32 GetIndex_ForBlueprint ( [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) InKey ) const